Table for supporting glass sheets and method of bedding the same thereon



NOV. 10, 1931. ADAMS 1,831,617

' TABLE FOR SUPPORTING GLASS SHEETS AND METHOD OF BEDDING THE SAME THEREON Filed July 26, 1928 gwvmtoa Dame/ Hda/ns Patented Nov. 10, 1931 UNITED STATES PATENT OFFICE DANIEL ADAIE ANN ARBOR, MICHIGAN, ASSIGNOB TO LIBBEY-OWENS-FOBD GLASS OOHPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO 11 1mm 1'03. sorronrmo emss snnn'rs AND METHOD or nnnnnvo THE sum THEREOF Application filed July 26, 1928. Serial No. 295,399.

continuous system for surfacing sheet glass,

a plurality of tables are ordinarily coupled end to end and are adapted to carry the glass sheets laid or bedded thereon successively beneath and in contact with the grinding and polishing tools of a plurality of grinding and polishing units.

The aim and principal object of this inao vention is the provision of a novel type of table and an improved method of layin or beddin the glass sheets thereon, the emp oyment 0 such a table and the practice of such method rendering possible the bedding of the glass sheets upon said table in a sim 1e and efiicient manner to the end that the sai sheets will be rigidly and uniformly suplported throughout and maintained in desire position against accidental displacement during the surfacing operation whereby the danger of breakage or the liability of the sheets cracking or becoming displaced will'be eliminated or at least greatl minimized.

5 tion willbecome more apparent during the course of the' followin description when taken in connection wit the accompanying drawings;

In the drawings forming a part of this application and wherein like numerals are employed to designate like parts throughout the same,

Fig. 1 is a perspective view of an improved type of table constructed in accordance with the present invention.

Flg. 2 is a section taken substantially on the line 2-2 of Fig. 1, and

Fig. 3 is a section taken substantially on the line 3-3 of Fig. 2.

The improved type of table herein prothe table being provided upon its upper sur- Other objects and a vantages of the inven-- the sheet is. to be embedded, is adapted to vention. In practice, the mixture of sand vivided is designated in its entirety by the numeral 9 and consists ofga' base or body portion 10 mounted upon wheels 11 runnin upon railsor tracks 12, the body portion 0 face with a plurality of spaced transversely arranged channels 13. Carried by the base or bottom portion of the table is a top or cover plate 14 secured thereto by means of a plurality of fastening elements 15. The top 14 of the table is provided with a plurality of spaced openings 16 communicating with the channels 13, said openings being properly distributed throughout the area of said table.

. Resting upon the table top 14 is a preferably wire netting or screen 17 and stretched over this screen is a filter cloth 18 of any suitable material. Arranged around the edges of the table is a raised rim 19 secured in place by a plurality of fastening elements 20 which also pass downwardly through the top 14. The edges of the screen 17 and filter cloth 18 v f are adapted to be rigidly clamped between the rim 19 and table top 14 as shown.

The channels 13, provided in the body portion of the table, are closed at one end as by means of a plate or the like 21 while the opposite ends of said channels communicate with a longitudinally extending manifold 22 carried by the opposite side of thetable and having one or more outlet pipes 23- associated therewith.

In accordance with the present invention, a suitable material or-mixture, within which be desposited upon thetable so as to rest upon the filter cloth 18. This material is herein designated by the numeral 24 and preferably consists of a mixture of sand and water of the desired consistency or. density, although any other material or mixture found suitable for this purpose may be used without departing from the spirit of the inand water or other material is adapted to be deposited upon the table so as to fill the entire space within. the rim 19 and the said mixture 7 is adapted to be on a level with the top thereof. After the mixture of sand and water we tate or filter through the covering composed of the filter cloth 18.;a1id screen 17, through the openings 16 into';the'channe1s 13 and ex:

' teriorly thereof through the manifold 22 and outlet pi 23.

It will be readily apparent that as the water flows off from the mixture, the glass sheet will be permitted to settle down and become embedded within the remaining solid mass or sand which will form a cast or mold therefore. The sheet can then he passed beneath and subjected to the action of the grinding and polishing machines and due to the fact that the sand will rigidly and umformly sup ort the sheet throughout its entire area, the danger of said sheet cracking or ming broken or accidentally dislaced during the surfacing operation will he avoided or at least greatl minimized.

It is to he understood t at the form of the invention herewith shown and described iSe'tO be taken as the preferred embodiment of the same, and that various changes in the shape, siaeiaiid arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims. I claim: 1. A table for supporting glass sheets to be surfaced including a base or body portion provided with a plurality of spaced channels, a top for the base or body portion provided with a pluarlity of openings communicating with the channels, a wire netting resting upon said top, a filter cloth stretched over the wire netting and adapted to receive thereon a material within which the sheet is to be embeddedand permit the liquid contained in said material to pass through the wire netting and openings into the channels, and a raised rim arranged around the edge of the table, the edges of the wire netting and filter cloth being clamped between the rim and top.

2. A table for supporting glass sheets to be surfaced including a base or body portion provided with a lurality of spaced trans versely arranged c annels, a top for the base or body portion provided with a plurality of openings communicating with the channels, a wire nettin resting upon said top, a filter cloth stretor ed over the wire netting and adapted to receive thereon a material within which the sheet is to be embedded and permit the liquid contained. in said material to pass through the wire netting and openings into the channels, a raised rim arranged around the edges of the table, the edges of the wire netting and filter cloth being clamped between the rim and top, means at water covering the top of the table to form a semi-solid bed upon which aglass sheet is ada ted to be placed, and means for draining oil the water from said mixture thereby causing the sand to solidify and secure the sheet upon said table. 4

, 4. In apparatus for use in the surfacing of o sheet glass, a table provided with a plurality of openings, a covering for the top of the table, and a mixture of sand and water upon said covering to form a semi-solid bed upon which a glass sheet is adapted to be placed,

the water in said mixture being caused to pass through the covering and openings thereby causing the sand to solidify and secure the sheet upon said table.

5. In apparatus for use in the surfacing of sheet glass, a table provided with a plurality of channels communicating with the top thereof, a covering for the top of the table, and a mixture of sand and water upon said covering to form a semi-solid bed upon which a glass sheet is adapted to be" placed, the water in said mixture assing through the covering into said channels thereb causing the sand to solidify and secure to e sheet upon said table.

6. In apparatus for use in the surfacin of. sheet glass, a table provided with. a plurality of spaced channels communicating with the top thereof and being closed at one end, a manifold carried by the table and with which the opposite ends of the channels com municate, a coverin for the top of the table, a mixture of sand and water upon said covering forming a semisolid bed upon which a glass sheet is adapted to be laced,

the water in said mixture passing t rough the covering into said channels and. exteriorly thereof'through the manifold thereby causing the sand to solidify and secure the sheet upon said table.

7. In apparatus for use in the surfacin of sheet glass, a table provided with a plura ity of channels and a plurality of openings communicating with the channels, a covering for Y the top of the table, and a mixture of sand. and waterupon said covering forming a semi-solid bed upon which a glass sheet is" adapted to be placed, the water in said mixture passing through the coveringand openings into the channels thereby causing the sand to solidify and secure the sheet upon said table.

8. In apparatus for use in the surfacing of sheet glass, a table provided witha plurality of spaced channels and a lurality of openings above and in communication with the channels, said channels being closed at one end, a manifold carried by the table and with which the opposite ends of said channels communicate, a covering for the top of p the table, and a mixture of sand and water upon said covering forming a semi-solid bed upon which a glass sheet is adapted to be placed, the water in said mixture passincgl through the covering and openings into sai channels and exteriorly thereof through the manifold thereby causing the sand to solidify and secure the sheet upon said table.

9. In apparatus for use in the surfacing of sheet glass, 21 table including a body portion'provided with a plurality of channels, a top carried b the body portion and provided with a p urality of openings communicating with said channels, a cover for said top, and a mixture of sand and Water upon said covering forming a semi-solid bed upon which a glass sheet is adapted to be placed,

the waterin said mixture passing through the covering and openings into said channels thereby causing the sand to solidify and secure the sheet upon said table.

10. In apparatus for use in the surfacing of sheet glass, a table including a body portion provided with a plurality of spaced transversely arranged channels closed at one end, a manifold carried by the table and with which the opposite ends of the channels communicate, a top for the body portion provided with a plurality of openings communicating with the channels, a covering for said top, and a mixture of sand and water upon said covering forming a semisolid bed upon which a glass sheet is adapted to be placed, the water 'in said mixture passing through the cover and openings into said channels and exteriorly thereof through the manifold thereby causing the sand to solidify and secure the sheet upon said table.

11. The method of bedding glass sheets upon the top of a table, which consists in first depositing upon said table a mixture of sand and water to form a semi-solid bed, laying a sheet upon said bed, and in then removing the water from said mixture thereby causing the sand to solidify and secure the sheet upon said table.

12. The method of bedding glass sheets upon the top of a table, which consists in first depositing upon said table a mixture of sand and water to form a semi-solid bed, laying a sheet upon said bed, and in then causing the water to flow by gravity from said mixture whereby to effect a solidifying of the sand and a consequent securing of the sheet upon said table.

Signed at Toledo, in and State of Ohio, 1928.

the county of Lucas this 23rd day of July,

DANIEL ADAMS. 

